Internal SSL Error (Underlying BIO Error: Broken Pipe)

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Hello,

I am trying to understand what these messages mean:

ERROR: Problem setting up ssl connection:
error:00000005:lib(0):func(0):DH lib, Underlying BIO error: Connection reset by peer
ERROR: Unable to set up ssl connection with peer ‘167.94.146.58:55590’
ERROR: SSL_shutdown() failed:
error:00000001:lib(0):func(0):reason(1), Internal SSL error
ERROR: SSL_shutdown() failed: error:00000006:lib(0):func(0):EVP lib, Unknown
ERROR: SSL_shutdown() failed: error:00000005:lib(0):func(0):DH lib, Underlying BIO error: Broken pipe
ERROR: Problem setting up ssl connection:
error:00000001:lib(0):func(0):reason(1), Internal SSL error
ERROR: Unable to set up ssl connection with peer ‘167.94.146.58:44748’
ERROR: SSL_shutdown() failed:
error:00000001:lib(0):func(0):reason(1), Internal SSL error
ERROR: Problem setting up ssl connection:
error:00000005:lib(0):func(0):DH lib, Underlying BIO error: Connection reset by peer
ERROR: Unable to set up ssl connection with peer ‘167.94.146.58:37314’
ERROR: SSL_shutdown() failed:
error:00000001:lib(0):func(0):reason(1), Internal SSL error

this is some random IP address from the internet. Is this a misbehaved client, or perhaps is it sending non-sip commands to my asterisk?

How can I find out what exactly is happening here?